Thrown-shuttle weaving machine



June 5,1928? 1,672,268

' M. B. LLOYD THROWN SHUTTLE WEAVING MACHINE Filed Jan. 15, 1926 3 Sheets-Sheet 1 O HQ ll l Tufenlor .mr zazw Z20 (1 June 5, 1928.

M. B. LLOYD THROWN SHUTTLE WEAVING MACHINE 2 hm N\. m e 0 M m m fi 1 3 M S r a m F m \m m Q m 1 9% June" 5, 1-928.

' 1,672,268 M. B. LLOYD THROWN SHUTTLE WEAVING MACHINE Filed Jan. 15, 1926 3 Sheets-Sheet 3 Patented June 5, 1928.

MARSHALL B: LLOYD; or. MENOM'INE FIELD COMPANY, 01 BOSTON, MAS

SETTS.

THROWNSEUTTLE wnavnie ACHINE;

Application filed" January 15, 1926. serial Nb. 81 5231.

E, MICHIGAN, ASSIGNOR Tb" HEYWOUD WA KQE- SACHUSETTS, A COBPOR'ATION'OE"MASSKCHU- This invention relates to improvements in thrown shuttle weaving machines or. looms and it consists of the matters hereinafter described and more particularly pointed: out

in the appended claims;

The mainobject of the inventionis to provide a weaving machine or loom" for reed fabric and the like, whiclrmachin'e embodies a thrown pinch shuttle, adapted to lay a stake in a filler strand or. warp member shed. at each throw or movementof the shuttle, whereby weaving at higlrspeed may be attained. v

A further object of the carrying a pinching or gripping means at each end thereof and which are so co-ordi-.

nated with fixed parts of the machine that at one end of the throw, thetrailing, pinchin-g means is automatically actuated to open and release its stake and laythe'same inthe shed and the advancing pinchingflmeans 1s v automatically closed to grasp a stake and -110 lay the same in the newly formed shed and so on, the pinching means acting in alternation to grasp a stake, lay the same in the shed and then release the same.-

A further object of the invention is to provide such a machine, wherein the shed forming mechanism may be readily controlled as by a jacquard toarrange the filler strands or warps in that order in the shed,

so that figures may be produced in the finished fabric at the desired intervals.

My invention consists generally in mech anism of the form, arrangementand coaction of the parts thereof whereby the above mentioned objects, together with others that will hereinafter appear, are attainable;rand ny invention will be more readily understood by reference to the accompanying. drawings which illustrate what I consider at the present time, to be the preferred embodiment thereof.

In said'drawings-:

Fig; 1 is a perspective view of one side of a weaving machine embodying my invention. Fig. 2 is a transverse vertical sectional view through the same as taken on the line 2-2 of Fig. 1.

Fig. 3 is alongitudinal vertical sectional invention is to provide a weaving machine-for reed and likev fabrics, which. includes a thrown shuttle.

view through the shed forming mechanism thereof as taken: on the line 3-3 of Fig, 2.

Fig. 4 is a top plan. view, on an enlarged scale ofthe parts shown at the right hand end of Fig. 2.

, Fig; 5 isa longitudinal vertical. section through the parts shown-in Fig. 4:, as't'aken on the line 55 thereof.

Fig-6 is a transverse vertical detail sectional view as taken on the line G -6 of .Fig. 5.

Fig. 7 is a horizontal detail sectional view as taken on the line 7-7 of- Fig. 3.

y In general, my improved weaving machine is of the thrown shuttle. type but it differs materially from the ordinarythrown shuttle loom in thatthe shuttle carries no; weft'pirn or bobbinv but is aduplex pinch shuttle, that' is the shuttle carries a stake or weft pinching, or gripping" means at each. end,- said means operating at each-pick of the loom to alternately lay in one stake'andpiek: up a new stakeor weft and soon;

' Referring now in detail. to that embodiment of the invention illustrated in; the accompanying drawings l and Qindicate re- I spect'ively the upright side frame members of the machine or loom, wliieh members-are held in the desired spaced relation 111' any suitable manner, Associated with the. side frame member 1 but spaced latterally from the mid portion. thereof is a supplemental upright frame member best shown in 1. Extending transversely between'and; journalled in suitablebearings arranged v on the mid portions of said side frame: members are top and bottom horizontal. shafts it and 5 respectively, the formerbeing hereinafter termed the cam shaft and thelatter being hereinafter termed the drive shaft because itis from. this shaft that all operating, paints are driven. A

One end of each of said shafts projects; beyondlthe side. frame member 11 and tothe end of the drive shaft'is fixed-a a; combination gear having; a spur gear part. dands bevel gear part 7. J ournalled in suitable hearings on the supplemental frame member 3 is a" longitudinally extending counter shaft. 8,: on the frontendofwhieh is fixed a: bevel pinion Qimeshing'; with the'bevel gear 7 and entire rear end of which: is fined a large spur gear 10. Said spur gear meshes with. a pinion 11 on the armature shaft of an electric motor 12 all as best shown in Fig. 1. On the projecting end of the cam shaft fl is fixed a spur gear 13 which meshes with the spur .gear part 6 of said combination gear. It

is apparent from the foregoing that the drive shaft is rotated at the proper speed in a counter clockwise direction and the cam shaft is rotated in a clockwise direction, as best shown by the arrows in Fig. 1.-

Forwardly of the cam shaft is arranged,

the reciprocating or swinging beam 1 1' of the weaving machine, Said beam extends transversely of the machine and is mounted on the top ends of beam arms 1515 one adjacent each side frame member 1 and 2 respectively. The bottom end of each arm is journalled on studs 16-16, one pro ect1ng inwardly from each side frame member. Se

cured to and rising from the rear side of the beam is a reed 17 including a, plurality of closely spaced dents 18 through which the warplike filler strands 19 pass in closely adjacent planes there being a shuttle guide rail or flange 14 arranged between the beam and the bottom portion of the reed. Foreratively connected the rear end 'necting rod 25, the forward end of which ward and rearward reciprocating or swinging movement is imparted to the. beam as follows :On the cam shaft 4 is fixed tWo cam discs 202O each having a cam groove 21in one face thereof. Said cam groove is disposed eccentrically with reference to the shaft 4 and that part of the groove spaced the greatest distance from said shaft is made concentric therewith as shown at 21 to provide the dwell portion thereof. To the rear of said cam shaft are links 22 one for each cam groove and the top end of each link is pivotally secured to a bracket 23 fixed to the inner surfaces of the rear portions of upright extensions 24 of the side frame members. To the bottom end of each link is opof a conis likewise connected to the beam 14. On

' each link 22 midway between its ends, are rollers 22 each operatively engaged in an imparted to the beam for associated cam groove 21. It is apparent, that through the cams 20, links 22 and rods 25, a reciprocating or swinging movement is the cam shaft, with the beam in a momentary position of rest while in its rearmost position due to the dwell of the cams 20. When said beam is in this position, it is inclined slightly downwardly and rearwardly from the horizontal as best shown in Fig. 3.

Between the beam 14; and the cam shaft 4; is located a shed forming mechanism or harness indicated as a whole by the numeral 26 in Fig. 3. Said harness includes a comber frame comprising top, bottom and intermediate comber boards 27--28 and 29 respeceach rotation of tively extending between and supported by the forward portions of the upright extensions 24 of the side frame members 1 and 2. Associated with said comber boards and vertically slidable in suitable bearing openings therein is a plurality of lingoes or heddles 30. In this instance said lingoes or heddles are in the form of relatively stiff though lightweight metal rods or tubes each having a. transversely disposed eye or opening 30* for the passage therethrough of the associated filler strand or warp member 19,.

the shedding movement of which it controls. The said lingoes or heddles are so disposed in the comber boards that the warp members pass through the harness in side by side re lation from suitable feed and tension devices at the rear end of the weaving machine as indicated as a whole by the numeral 31 in Fig. 1. As the construction of the said warp strand feeding and guiding of any suitable kind and therefore forms no particular part of the present invention, it

means may be member 1 and 2, in the plane of the beam 14:

when the-same is inits rearward and momentary position of rest. is a fixed beam eX- tension or shuttle station 35-35 as best shown in Fig. 2 said extension including an upright flange 35 at the rear side' thereof which in effect form continuations of the rail let of the beam. The inner end of each beam extension, which projects a short distance inwardly of the plane of the associated side frame member, is supported therefrom by a bracket 36 while the outer end of each beam extension is supported upon the top end of a tubular post or leg 37' rising from the floor or base upon which the machine as a whole stands. It is upon said extension, that the shuttle 38 en'i'ployed in the loom comes to its momentary position ,ofrest at each pick of the loom and hence the term stationi The shuttle 38 while of the pinch shuttle type is indeed different from pinch shuttles hereto employed in reed fabric weaving machines whereinthe shuttle was mounted on the end of a long arm reciprocable in a raceway at one side of the machine and which inserts a weft or stake for each entire cycle or complete reciprocation, the said shuttle pinching upon a stake at one end of its ai d shuttle as cler Lenses movement and drawing the same through the shed and depositing it in the shed when "the shuttle arm reaches otherend of its movement. 7 I I The shuttle employed in the machine herein described is of the thrown shuttle kind and is duplex in its nature, in that it carries a'stake pinching or gripping means 39 at each end so that at the end of each throw thereof, one stake'19 is released by andjlaid in the shed by the pinching means at the trailing end of the shut-tlewhile another stake isgrasped by the advancing end of the shuttle to be dr'aw'nthrough' and deposited in the shed. As the shuttle is thrown in the opposi te'direction, the first mentioned (or trailing) end of the'sh'uttl'e becomes the advancing end, -and the second mentioned (or advancing) end of the shutt'lebecom'esthe trailing end thereoflthe terms trailing and advancing. being relativeto the direc= tionot movement or throw of the shuttle.

best shown in Fig. includes upright trigger members 39 between its ends, each associated with and adapted to control the opening and closing movements of said pinching means or fingers as will later appear- As the construction of the shuttle'torms the subject matter of my copending application means; 15, 1926, un-

Serial Number 81,52t and is fully set forth therein, it is not thought necessary to the beam extension.

again repeat-the same here as the above menv tioned general description should sufiice;

As the means for throwingthe-jshuttle from one beam' extension or station to'the other is duplicatedat each side the machine and as the shuttle throwing meansassociated with each station is the same, a detail' 'descript-ion of one only will be given. v

To the rear of each beam extensionis a rail or guide 4:0 in the form'of a cylindrical rod fixed at its ends in brackets 41 carried.

by said beam extension. Slidable on'said rod is one end of a pickerblock 42, the other end of which extends through a slot 35 in the extension flange 35"an d is formed'to provide a shuttle end receiving head or socket 43. In the shuttle block between the rail 40 and flange 35" on the beam extension is provided a vertically disposed and elongated slot H through which the top end of ."Said' stick near its bottom end on a laterally extending frame member so as to be capable of a swinging movement in'a direction parallel with Said stick include'sj'a short extension 47 on its bottom end'which' is connected by a contractile spring 48 with the side frame member, said spring normally acting to return the picker stick' to its outer position as shown in full l nes at theright;

hand side of Fig. 2. I

The shuttle throwing movement of the tending inwardly member, are pairs ets 59-50 andin each pair of 5 stick extends,

I long, or plate --:swmg1ng movement away stud '46 on the associated side- I proaches the stick-is imparted thereto as followszc Exfrom each side .frame of front and rear brackjournalled a longitudinally extending'rock brackets is shaft 51 of rectangular cross section. Fixed to each shaft between the brackets or each pair of brackets and in substantially the vertical plane of ,thedrive shaft 5 is an arnr including a longitudinally disposed cam likeflange 52 which is curved upwardly towards its rear end. On the front end of each shaft 51, which pro ects-a suitable distance beyond the associated front bracket '50 is an upwardly-extending crank arm 53.

To the top end of each crank arm is operatively connected,'the innerendqof a. link 54 the outer end of whichcarries a stirrup 55 through which the associated picker pad 55 interposed between each stirrup and its picker stick. Rigidly secured to the drive shaft 5 is substantially the plane of the there'being a shock absorbing rockshafts 51 arearms 56,- 56, the. onebeingset on the shaft to extend diametrically opposite the other as best shown in Fig. '2. he outer endiofceach'. arm carries. a roller '57 --,w1'1ich in the rotation of .the arm with said drive shaft, engages the cam flange 52 and thusro cks the shafts 51-51. inwardly in alternationl' After the roller leaves the cam flange,- the springs 48 before mentioned, return all parts to their normal position.

- As the picker "sticks act to throw the pinch shuttle through theshed "from one beam extension. or station to 'tremely high. speed, means each station to brake or the .otherlat an exare provided on .slowdown the movement thereof as it" approaches the ends of its throw, oth erwise great'damage' might result, not only to the shuttle but also to the picker block and correlated part-s. To th ns rake or slow down the shuttle movement 7 at each endofiits throw I provide the, 01- lowing; mechanism. On the front side at the outer end of eachbeam;eextension,. I providea bracket like member 60 (see 2 and 4') to the inner end oted:on a verticallaxis as at 61 a relatively, vertically edgewise disposed brake shoe 62. which is yieldingly, held against from the beam ex? 1 tension by a'leaf spring 63. Inward swing- 1 ing movement ofsaid brake shoe is limited by a'clip like plate 64 carried by the inner end of the brake shoe for engagement with the :beam extension.

It will be noticed from Fig.4, that the inner. end of said brake shoe, which is curved as shown is normallyspaced closer to the associated beam flange 35" than is the bracket "60 "to which it is connected.

This restricts the entrance of the shuttle,

into the station so thatas, the shuttle apsaine. at the Figs. ofwwhich is pivend of its throw, I it engages with the brake shoewh'ich. yields I outwardly slowing down the shuttle, so that .yielding as it does, will also check the rebound of the shuttle so that it will be in the proper position to be thrown in the opposite direction. Should for some unforseen reason, the shuttle stop in a position bridging the gap or space between the beam and one of thebeam extensions in the movement of the beam, the shuttle will act to force the brake shoe outwardly so that no damage will result-to the shuttle. a

On the flange of each extension are mounted inner and outer tripper blocks 65 and 66 respectively adapted to beengaged by and toactuate the triggers 89 on the shuttle to automatically open and close the pinching means at each end thereof. Said blocks have screw and slot connections with said flange so as to be capable of being adjusted to the properposition thereon with respect to the triggers of the shuttle, the operating portions of said tripper blocks being relativelyoffset as best shown in Fig. 4:, the triggers of the shuttle being likewise offset as is apparent so that one of said tripper blocks canuin no way interfere with the shuttle trigger adapted to be actuated by the other tripper block.

In the operation of the machine, the filler strands or warp members-are manipulated by the harness, in turn controlled by the jacquard neck cords so that the desired position of the various strands or warp mem-.

hers is attained in each shed. Thusthe strands are so manipulated that plain fiat fabric is produced wherein the individual strands are arranged over and under the stakes in alternation and in portions of the fabric,a contrast of appearance is produced therein by passing a group of adjacent filler strands or warp members over the same side 'of one stake and under another to form the the other direction.

desired figure. The sheds of course are formed in timed. relation with the movement of the beam and when the beam is at its rearward and momentary position of rest, as shown. in Fig. 3, one of the plcker arms acts to throw the shuttle in one direction, the

shuttle having previously grasped or pinched by the means new on. its trailing end, a stake 19 As the shuttle reaches its other station, the tripper blocks 65 and 66.

are engaged by the triggers of the shuttle which releases the stakewithin the shed and picks up another'one for its movement in As soon as a stake is deposited in a shed at which time the shuttle has cleared the beam end, the beam moves forwardlyand beatshome the stake into its position in the fabric and then immediately returns to its rearward position, a new shed being formed in the meantime. Thefabric is wound as it is formed upon a take up roll place at each throw, it is twice as fastas a pinch shuttle loom for the same purpose, which lays a 'stakefor. each'complete back and forth movement of the shuttle.

While in describing my invention I have referred to many details of construction as well as form and arrangement ofthe parts thereof, the same is to be taken as by wayof illustrationonly and not by way of limitation except as may be pointed out in the appended claims.

I claim as my invention:

1. A loom embodying therein, a recipro- H cable beam, means providing fixed extensions therefor when said-beam isjin one p0si-. tion, means for throwing. a shuttle having trigger actuated grippers from one extension across the beamto the other exten-sionwhen said beam is in said position, and means in cluding-longitudinally spaced tripper blocks on each extension arranged to overhang the shuttle when on said extension and adapted to actuate the triggers thereof.

2. A loom embodying therein, a reciprocable beam, means providing fixed extensions therefor when said beam is in one position, means for throwing a shuttle having tr1g- Y ger actuated grippers from one extension I across the beam to the other extension when said beam is'in said position, and means in eluding longitudinally spaced tripper blocks on each extension arranged to overhang the shuttle when on said. extension and offset into different planes transversely of the extension and adapted to actuate the triggers. thereof.

3. A loom embodying therein, a reciprocable beam, means providing fixed extensions therefor when said beam is'in one position, each extension including an upright back flange, means for throwing a shuttle having trigger actuated grippers. from one extension across the beam to the other extension when said beam is in said position, and a pair of longitudinally spaced tripper blocks sup ported on said back flange and including parts arranged in different planes transversely of the extension to overhang the shuttle while on said extension to actuate the triggers thereof.

4. A loom embodying therein, a reciproand adapted cable beam, means providing fixed exten- SlOIlS therefor when said beam 1s in one position, each extension including an upright back flange, means for throwing a shuttle having trigger actuated grippers from one extension across the beam to the other extension When' said beam is in said position, and a pair of longitudinally spaced tripper blocks having a longitudinal screw and slot adjustment on the back flange and including parts arranged in difie'ren-t planes transversely of the extension to overhang the shuttle While on said extension and adapted to actuate the triggers thereof.

In testimony whereof, I have hereunto set my hand, this 17th day of December, 1925.

MARSHALL B. LLOYD. 

